Method of making screens



METHOD OF EAKING SCREENS Filed March 15, 1926 2 Sheets-Sheet l 1 N VENTOR. fir-367 31?- 442266 ATTORNEY.

y 21, 1929- H. b. ALLEE. 1,713,809

METHOD OF MAKING SCREENS Filed March 15, 1926 2 Sheets-Sheet '2 IN V ENTOR. flfffiffi Z HZZte WAW v A TTORNEY.

Patented May 21, 1929.

stares HERBERT D. ALLEE, 0F DETROIT, MICHIGAN.

METHOD .OF MAKING SCREENS.

Application filed March 15, 1926. Serial No. 94,975.

ihe invention relates to screens and has among its objects the provisionof a simply constructed durable and cheaply manufactured screen.

A further feature of the invention resides in providing a method ofmaking a plurality of screens affording less expensive production. Thus,with my invention, a plurality of screens may be constructed, oppositeborder frames being provided to make up a number of screens connectedintegrally as by the screen material. By thus building up a plurality ofscreens, the separate screens may be severed from each other by a simplecutting operation. I

Nith these and other objects in View, the invention resides in the novelfeatures of construction and combination and arrangements of parts asmore fully hereinafter described and claimed.

Referring to the accompanying drawings in which like referencecharacters indicate corresponding parts:

Figure l represennts the initial step in the manufacture of the screens;7

Figure 2 is a perspective view showing one of the side border framebars;

Figure 3 is a sectional view along 3-3 of Figure 2;

Figure f is a fragmentary view in cross section illustrating theapplication of the side border frame bars to the screen material;

Figure 5 is a view corresponding to Figure 1 with the side border framebars applied to the screen material;

Figure 6 is a detail sectional view along (3-6 of Figure 5 showing aside border frame bar in clamped engagement with the screen material;

Figure 7 is a fragmentary perspective view illustrating the next step inthe manufacture of the screens including mitering the side frame bars;

Figure 8 is a plan View showing a transverse border frame bar;

Figure 9 is a fragmentary View showing the transverse frame bars appliedto the screen material;

Figures 10, 11 and 12 are sectional views along 10-10, Til-11 and 12-12respectively of Figure 9;

Figure 13 is a perspective view illustrating the final step in theprocess consisting of severing the finished screens, and

Figure 14 is a plan view illustrating a completed screen.

in the drawings reference character A represents a table or like supportover which is extended a strip of screen material B. For convenience,the screen material may be unwound from a roll of screen material Cwhich may be supported by suitable brackets 10 from the table A. Thestrip of material B has a width substantially corresponding to onedimension of the finished screen product and the initial step in themethod consists in extending this strip of material over the table A fora length of twenty or thirty feet for example, depending upon the numberof screens to be made at a time.

The next step in the operation consists in providing a pair ofsubstantially U-shaped sheet metal, side border frame bars I), which, asshown in Figures 2 and 3, particularly, are slotted transversely at 11,and mitered, the spacing of these slotted formed portions substantiallycorresponding to the other desired final dimension of the screen. Theprojections 12 preferably have their ends return-bent at 13 and spacedapart sufficiently to freely receive the screen material B therebetween.As shown in Figure 8, the slots 11 preferably extend along theprojections 12 as far as the inner extremities of the returnbentportions 13. As shown in Figures 4t and 5 these side border frame barsI) are moved inwardly toward each other so as to engage the oppositelongitudinal edges of the strip of screen material B between theprojections 12. i

The next step in the operation consists in moving together theprojecting ends 12 of the frame bars D so as to clamp therebetween thescreen material. This may be accomplished in any suitable manner such asby running rollers or other tools longitudinally along the innerextremities of the frame bars Before the frame bars D are applied to thescreen material I prefer to miter the portions of the frame bars Dadjacent the slot 11 as shown at 1st in Figure 7, although when foundmore convenient, the mitering may be done after application of theseframe bars to the screen material. The frame bars D may then bepositively secured to the screen material, as by spot welding atsuitable points 15.

For bordering the remaining opposed sides sponding to the U-shaped sideborder frame bars D. As shown in Figure 8, the ends of the frame bars orelements 16 are mitered, at 18 to conform with the mitered portions '14The next step in the operation consists in placing the transverse frameelements 16 and 17-atopposite sides of the screen material respectivelyso as to engage therebetween the the screen material with the ends ofthese elements in facecontact with the mitered portions 14. J By reasonof such construction-the.

frame members on opposite sides of, the screen material are brought tolie substantiallyin a common plane.

Thetrans verse frame elements 16 and 17 maythen be welded to each otherand to the screen material by spot welding at suitable points19. Alsothe corner construction may be spot'welded as indicated at20.

At'this point in the method of manufacturing the screens it will benoted that a plurality of screens have been formedflntegrally connectedby the continuous strip of screen material B and also by the portion 21of the side frame bars D at the extremities of the slots 11. 1

The final step in the method may consist in severing the screens'fromeach other and this may be conveniently accomplished by severing meanssuch as the blade 22 pivotally supported at 23 or otherwise suitablyguided along the edge of table A. The finished connected screens arethusmoved along the table until. the slots llregist'er with the path ofmovement of blade 22, at which time the end screen maybe severed by theblade and the next screen'moved into severing position as will bereadily understood. In Figure 14 I have illustrated the finished screen.be apparent thatafter the last screen has been severed the strip ofscreen material will have again beenmoved over table A. from the roll ofmaterial C ready for the next series of operations in making up anoth rset or series of screens. 7

It should be understood that my improved screenmay, if desired, beconstructed by other methods of manufacture than that described above.It must also be apparent that if desired, the various steps ofmanufacture such as I have outlined for purposes of'illustration may befollowed in other thanthe particular sequence that I have described.

While it is believed that-from the foregomg description, the nature andadvantage of my invention will be readily understood,

It will sorted to when desired as fall Within the scope of the claims.

lVhatlclaimas myinvention is-:

1. The method of manufacturing screens consisting in providing a stripof screen material sufficient for a plurality of screens of the finaldesired dimension, applying border mensions, applying a' border framealong the longitudinal edges of said material and transversely of thematerial, the spacing of the transverse border frames corresponding toone desired dimension of the screen and final- 1y severing the strip ofscreen material by cutting the same transversely at the said transverseborder frames to form a plurality of screens.

1. The method of manufacturingsubstantially rectangular screensconsisting in providing a strip of screen material suiiicient for apluralltyof screens of the final desired dlmensions, the width of thestrip" corresponding substantially to one desired dimension of thefinished screens, applying'a border framealong the opposed longitudinaledges of the strip'and transversely of the strip of material at aplurality'of points along its length spaced. to correspond substantiallyto the other desired dimension of the screens securing the borderframes'to the screens, and

v finally cutting the strip transversely to form a plurality of finishedscreens.

5. The method of manufacturing substanmension of the screen securing.the border frames to the screens, feeding thestrip'intermittently andcutting thestrip transversely at periods of rest of the strip to severthe completed screens.

6. Themethod of manufacturing screens which consists in inserting thelongitudinal edges of a length of screen material in preformed bordermembers, arranging cross members on opposite sides of the screenmaterialtransversely thereof and at a plurality iso of longitudinally spacedpoints, securing the cross members to the screen material and to eachother, and subsequently cutting the length of screen material adjacentthe cross members to form a plurality of screens.

7. The method of manufacturing screens which consists in preforming apair of longitudinal border members, inserting the longitudinal edges ofa length of screen material in the preformed border members, securingthe border members to the said screen material, transversely slottingthe border memhere at a plurality of predetermined points, preforming aplurality of transverse frame members, mounting these transverse framemembers transversely of the screen material and at opposite sidesthereof adjacent the slots in the border members, securing thetransverse frame members to the screen material and to each other, andsubsequently cutting the screen material adjacent the transverse framemembers to form a plurality of individual screens. I

8. A step in the process of manufacturing screens, which consists inapplying transverse frame members to the opposite sides of a length ofscreen material, securing opposed pairs of these transverse framemembers to the screen material and to each other and severing the lengthof screen material adjacent the said transverse members.

9. The method of manufacturing screens which consists in applying aborder to a length of screen material, applying a plurality oftransverse members to the length of screen material, and subsequentlysevering the length of screen material adjacent the said transversemembers.

10. The method of manufacturing screens which consists in preforming apair of border members, inserting the longitudinal edges of a length ofscreen material in the preformed border members, slotting the bordermembers at a plurality of predetermined points, mitering the bordermembers adjacent the said slots, preforming a plurality of transverseborder members, arranging these transverse border members in pairstransversely of the screen and on opposite sides thereof, and with theirends in engagement With the mitered portions of the longitudinal bordermembers, and subsequently severing the length of screen material betweeneach pair of transverse border members.

11. The method of manufacturing screens, which consists in securing to alength of screen material longitudinal and transverse border members toform a plurality of individual screens joined to each other by means ofintermediate portions of the screen material and subsequentlytransversely cutting the intermediate portions of the screen material tofree the individual screens.

12. A step in the manufacture of screens which consists in securing to alength of screen material and intermediate the ends thereof a pluralityof transverse border members in spaced relation to each otherlongitudinally of the length of screen material.

In testimony whereof I afiix my signature.

HERBERT D. ALLEE.

